The Ukrainian-Russian war, which has actually been going on since 2014 and escalated on February 22, 2022, has changed the established way of life of the vast majority of Ukrainians, including the algorithm and principles of social mobility, both horizontal and vertical, as 7915287 people left for Europe for temporary protection and 4867106 people officially registered within Ukraine could not but affect the mobility of Ukrainian society. The aim of the article is to determine the impact of the Ukrainian-Russian war on the change in the channels of vertical social circulation, such as the army, the church, educational and upbringing institutions, the process of wealth accumulation, family and marriage. Research methodology. The research methodology is interdisciplinary in nature and lies at the intersection of social philosophy and sociology. The principles of historicism, consistency, objectivity, and the connection between the historical and the logical were also used to solve specific research tasks. Results. According to P.Sorokin`s definition, social mobility means any transition of an individual, group or social object, or a value created or modified through activity, from one social position to another, as a result of which the social position of an individual or group changes.P. Sorokin distinguishes between two forms of social mobility: horizontal andvertical. Horizontal mobility is the transition of an individual or a social object from one social position to another, which is located at the same level. But the most important process is vertical mobility, which is a set of interactions that facilitate the transition of an individual or social object from one social stratum to another. This includes, for example, a promotion (professional vertical mobility), a significant improvement in well-being (economic vertical mobility), or a move to a higher social stratum, to a different level of government (political vertical mobility). Conclusions. The Ukrainian-Russian war has had a significant impact on the channels of vertical circulation. Considering the impact of the war on the army as one of the main channels of vertical circulation, we can state that since the beginning of the war, about 1 million mostly male population of Ukraine were forced to change their profession from civilian to military, and professional military personnel, due to losses among the command or their own talent and heroism, were able to take command positions in the Armed Forces, the National Guard, and the National Police. At the same time, the war has shaken the status of such social institutions as the church, the process of wealth accumulation, and family and marriage (especially with a representative of a different social status), making them channels of downward movement.